“…Chemsex drug use has been associated with a number of harms including; sexual and other behaviours carrying HIV and hepatitis C risk (such as CAI, group sex and multiple partners, fisting and injecting) (Bourne et al., 2015; Daskalopoulou et al., 2017; Glynn et al., 2018; Hegazi et al., 2017; Maxwell, Shahmanesh & Gafos, 2019; Ristuccia, LoSchiavo, Halkitis & Kapadia, 2018; Tomkins et al., 2019), HIV diagnosis (Halkitis, Levy, Moreira & Ferrusi, 2014; Kenyon, Wouters, Platteau, Buyze & Florence, 2018; Pakianathan et al, 2018; White et al, 2019) and suboptimal adherence to ART among people living with HIV (Daskalopoulou et al., 2014; Perera, Bourne & Thomas, 2017; Stuart, 2013). The evidence on chemsex impacting ART adherence includes a systematic review published in 2017, reporting chemsex drug users as having 23% higher odds of ART non-adherence than non-chemsex drug users (OR 1.23, 95%CI 1.10–1.38, I2 0%, p = 0.372) (Perera et al., 2017).…”